Thirty Years of Solar Proton Events
Abstract
A total of 217 significant solar proton events with a flux of over 10 particles/(sq cm--sec-ster) above 10 MeV have been observed at the earth during the past three solar cycles with at least 15% of these events containing relativistic (i.e. > 450 MeV) protons. Other than an increase in solar proton event occurrence with an increase in the sunspot cycle, no recognizable pattern could be identified between the occurrence of solar proton events and the solar cycle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1990
- Accession Number
- ADA231455
Entities
People
- D. F. Smart
- M. A. Shea
Organizations
- Air Force Systems Command